Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:50:05 2012 Optimize a model with 37634 rows, 38220 columns and 150148 nonzeros Presolve removed 33 rows and 6047 columns Presolve time: 0.94s Presolved: 37601 rows, 32173 columns, 143717 nonzeros Variable types: 0 continuous, 32173 integer (32173 binary) Found heuristic solution: objective 195.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 361 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 306 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (698 simplex iterations) in 1.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%